CN105899929A - Technical testing method - Google Patents
Technical testing method Download PDFInfo
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- CN105899929A CN105899929A CN201480072203.XA CN201480072203A CN105899929A CN 105899929 A CN105899929 A CN 105899929A CN 201480072203 A CN201480072203 A CN 201480072203A CN 105899929 A CN105899929 A CN 105899929A
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- Prior art keywords
- confidence level
- technical testing
- physical parameter
- equipment
- parameter
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/05—Testing internal-combustion engines by combined monitoring of two or more different engine parameters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/96—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof characterised by specially adapted arrangements for testing or measuring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0088—Testing machines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/80—Diagnostics
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/83—Testing, e.g. methods, components or tools therefor
Abstract
The invention relates to the field of testing methods, and specifically to a method for technical testing of a device, including at least one operational step corresponding to a stable value of at least one operational setting of the device and/or of a test bench for the device. Said operational step ends within a maximum duration threshold if a criterion associated with a set of physical parameters collected during the operational step is met and a level of confidence associated with said set of physical parameters reaches at least one predetermined threshold.
Description
Background of invention
The present invention relates to a kind of technical testing method, this technical testing method is used for testing equipment and wrapping
Including this equipment that operates at least one operational phase, at least one operational phase described sets corresponding to this
Standby and/or for testing the stationary value of at least one operational set-points of the testboard of this equipment.
In technical testing field, equipment while using in multiple different operation speed to be run into
Equipment of testing under rate is common, it is therefore intended that characterize the whole operation envelope of equipment as completely as possible
(operating envelope).For typical case, during testing, this be by follow include many
The sequence of individual operational phase and complete, each operational phase is kept a predetermined duration, and this is pre-
Determining the duration is considered to be enough to ensure that between this stage duration the operating parameter about equipment that obtains
Information quality.
But, the sequence of this operational phase running the predetermined duration can cause presenting sizable always
The test of duration.Unfortunately, and primarily for economic cause, it is desirable to limit always holding of test
Renew.Additionally, the indivedual durations regulating each operational phase can make the large number of operation of test set
Fixed-point value is possibly realized, thus allows the operation envelope of the equipment that is test for more completely to be characterized.
The purpose of the present invention and general introduction
Technical testing method described in the disclosure is intended to remedy those defects.Particularly, disclosure meaning
Figure provides a kind of technical testing method, and the method may be while maintaining test validity, minimizing skill
Stage quantity in the operational phase sequence that total duration of art test and/or increase are devices under.
In at least one implementation, this purpose was achieved by the fact that in the technical testing phase
Between, this technical testing include with this equipment and/or for test the testboard of this equipment at least one behaviour
Make at least one operational phase that the stationary value of set point is corresponding, if met and in phase operational phase
The standard that is associated of one group of physical parameter that obtains between and if being associated with described one group of physical parameter
Confidence level be at least up to predetermined threshold, the most described operational phase before maximum duration threshold value eventually
Knot.This second condition makes enough reliable for standard so that the scene of termination operational phase and standard just
The scene of unreliable (even and if therefore meet this standard also the operational phase will not be made to be shortened) distinguishes
It is possibly realized.Particularly, for the attached of described operational phase that terminated before maximum duration threshold value
Mark-on standard may is that described standard is satisfied and described confidence level has reached the most described predetermined threshold
Up to few a certain predetermined minimum duration, with avoid in a physical parameter of described one group of parameter certain
Transient wave triggers the premature interruption of this operational phase.
In this context, term " one group of physical parameter " should be broadly interpreted, it is possible to therefore
Including single physical parameter.But, described one group of physical parameter can include multiple physical parameter, often
All corresponding with one confidence level of individual physical parameter is associated, with described one group of physical parameter entirety phase
The confidence level of association is the function of the confidence level being associated with the plurality of physical parameter.Therefore,
The reliability of each physical parameter can depend on this physical parameter calculate confidence level time important
Property and be weighted, described confidence level is associated with the plurality of physical parameter and authorizes next to grasp
Make the conversion in stage.By example, described function can include by with in the plurality of physical parameter
Product that the confidence level that two physical parameters are associated is multiplied together and/or from the plurality of thing
Two confidence level sums that two physical parameters in reason parameter are associated deduct identical the two
The product that confidence level is multiplied together.In fuzzy logic, the product of two true value is corresponding to probability
T-modulus operator, and the product t-corresponding to probability of two true value is deducted from same two true value sums
Association's modulus operator.
In order to would correspond to confidence level and the reliability about this physical parameter of each physical parameter
Available information matches, confidence level can be the most predetermined or calculated according to noise level,
And/or according to asymmetric corresponding in the signal of physical parameter that is associated during traveling time window
Coefficient of uncertainty is calculated and/or according to the difference quilt of the value of the physical parameter being associated with predetermined threshold
Calculate.
In order to enable the principle processing confidence level fuzzy logic, each in described confidence level
Person can have the value in scope 0 to 1.
In order to enable to test this equipment in multiple different operation rate, the method can include multiple difference
The sequence of operational phase, each operational phase is corresponding to being test for equipment and/or for testing this equipment
The stationary value of at least one operational set-points of testboard.In described sequence, the order of operational phase can
With according at least one priority assigned to each operational phase and according to corresponding to the plurality of
The value of at least one operational set-points of operational phase is set up.The order of operational phase can be according in advance
Definition standard and be modified, depend on by how the equipment of technical testing responds.
By the equipment of technical testing can particularly one engine, particularly one liquid booster rocket engine,
More particularly there is the liquid booster rocket engine of turbine pumping system.
Present invention provides the electronic control unit with the output of at least one data, described data are defeated
Go out at least one operational set-points is launched to equipment and/or the test being used for testing described equipment
Platform, described unit is configured to control the technical testing of this equipment when applying above method.This configuration
Can be the physical configuration of at least one electronic circuit of this electronic control unit, or it can pass through
Software realizes in programmable electronic control unit, and described software can be performed by computer system
One group of instruction of row technical testing method.Such one group of instruction can be contained in data medium.Art
The arbitrary data storage device that can be read by computer system specified in language " data medium ".These data
Medium can the magnetic data storage device of the most such as disk or tape or the light of such as CD
Learn the electronic data storage of data storage device or such as volatibility or non-volatile electronic memory
Equipment.
Accompanying drawing is sketched
Read by the implementation shown in non-limiting example described in detail below after, can be very
Understand that well the present invention and advantages of the present invention will preferably embody.This description refers to accompanying drawing, in accompanying drawing:
Fig. 1 is to illustrate in an embodiment of the present invention, by including the testboard of electronic control unit
On the schematic diagram of liquid booster rocket engine of turbine pump feeding；
Fig. 2 is six major functions of the technical testing method being shown in the present invention one implementation
Schematic diagram；
Fig. 3 A be illustrate according in traveling time window a signal noise spread and owing to this signal
The chart of confidence level；And
Fig. 3 B is to illustrate according to the asymmetric coefficient of uncertainty of a signal in traveling time window and attribution
Chart in the confidence level of this signal.
The detailed description of the present invention
Fig. 1 illustrates the liquid booster rocket engine 1 fed by turbine pump, and this engine is installed in test
On platform 2, in testboard 2, this engine is connected to electronic control unit 3, this electronic control unit 3
The contour curve using the sequence including multiple operational phase performs test.
In an illustrated embodiment, rocket engine 1 is the rocket engine of " expansion cycle " type, wherein
Turbine pump 4 and 5 is by the regenerative heat exchanger 6 adjacent with the wall in the propelling chamber 7 of rocket engine 1
Activated by one of propellant afterwards.Feeding valve 8 and 9 is inserted in water tank 10 He comprising propellant
Between 11 and corresponding turbine pump 4 and 5, bypass valve 12 and 13 make these turbine pumps 4 and 5 to
It is bypassed at least partially through the propellant heated by heat exchanger 6.But, the present invention is not with any side
Formula is limited to test this rocket engine, it can be applied to the best to test other kinds of engine with
And the most other kinds of equipment.
In the embodiment shown, the operation of rocket engine 1 can be by feeding valve 8 and 9 and bypass
Valve 12 and 13 controls.Each in these valves be all connected to electronic control unit 3 for this so that
Receive operational set-points.Testboard 2 also has a sensor, the most such as advance the temperature in chamber 7 and
Pressure sensor 14 and 15 and the thrust in the support member of rocket engine 1 and vibrating sensor
16 and 17.These sensors 14,15,16,17 are also connected to electronic control unit 3 to it
Fire a rocket the operating parameter of engine 1.This group operating parameter X can include the first parameter A, the second ginseng
Number B, by that analogy.
In testboard 2, rocket engine 1 to be subject to include the technical testing of the sequence of operational phase PF,
So as the operating parameter X of the rocket engine 1 that assessment obtains during each of these operational phases.Should
Each operational phase PFn in sequence is corresponding to stably setting for one group of the operation of rocket engine 1
Point value, and be intended to reproduce the operating point relevant for the normal use of rocket engine 1.
Each operational phase needs to be to be enough to collect represent the operation ginseng of rocket engine 1 during this test
The duration of the value of number X.Meanwhile, for the operational phase and thus be accordingly used in excessive duration of test in
Reveal especially in the defect becoming present aspect.It is therefore desirable to find, stage duration is traded off.
Fig. 2 illustrates six key steps of the technical testing method that can perform by the system shown in Fig. 1.
In first function F1 of the method, the form including the data about each operational phase PFn is deposited
It is stored in the memory (data storage device or random access memory (RAM)) of electronic control unit 3
In.For each operational phase PFn, this form can be particularly including: the identifier of operational phase PFn,
Provide the first parameter para1 of the priority assigned to stage PFn, n；Rocket engine 1 and/or test
The operating and setting point value of platform 2 and be also possible to monitor threshold value；The maximum duration tmax, n in this stage and can
Can minimum duration tmin, n；At least one stage ending standard, each standard with in the operational phase
One group of physical operations parameter X that period obtains is associated；Each with about each stage ending standard
The confidence level that group operating parameter X is associated；And to be applied in described standard, physical parameter and/
Or the logic of confidence level and/or mathematical operator.By example, be given and assign to each stage PFn
Parameter para1 of priority, n can have the value selected from value 1,2 and 3, and value 1 corresponds to
Limit priority, value 3 is corresponding to lowest priority.By example, stage ending standard can be to relate to
And during traveling time window the standard of stability of the described operating parameter X of sampling.
In the second function F2, electronic control unit 3 is according to the priority giving each stage, right
The operational phase of the form set up in next comfortable first function F1 is ranked up, but is also contemplated for continuously simultaneously
The degree of approach of the value of the operational set-points between the stage.In some specific environment, two can be associated
Or more operational phase, in order to guarantee that they perform with the order carried out in the past.This second function F2
It is performed when technical testing starts, was then repeated before the end of each operational phase PFn,
To update the sequence in remaining stage.In this implementation, electronic control unit it is also contemplated that
Remaining time, until dyestuff available in water tank 10 and 11 is exhausted
Therefore, by example, each operational phase PFn can with described first parameter para1, n,
Corresponding to second parameter para2 of its degree of approach with the current generation, n and the 3rd parameter para3, n
Be associated, described 3rd parameter para3, n corresponding to the maximum duration tmax, n that assign to it with can
To maintain under the speed being associated with this operational phase PFn, (and propellant quantity is still at case 10,11
In available) maximum operation duration tcap, the difference of n.
In this example, still to sort for this and second parameter para2 in each stage that selects, n
Value below equation can be used to calculate, as example:
Wherein pn and RMn is the combustion pressure during this operational phase PFn and propellants respectively
Ratio, pc and RMc is to advance the current pressure in chamber 7 and propellant mixture ratio respectively, and α1[ALPHA_1]
And α2[ALPHA_2] is for the coefficient to these physical parameters weighting characterizing this stage.
3rd parameter para3, the value of n can deduct to it in n by operating duration tcap from maximum
The maximum duration tmax assigned, the value of n, and remaining each operational phase PFn is calculated, should
Maximum operation duration tcap, n corresponding to the speed of this operation and hold corresponding to remaining propellant
Amount.
If at least one of remaining operation stage PFn, the 3rd parameter para3, the value of n
Negative, thereby indicate that the stage in Kao Lving can not be maintained in the case of not exhausting propellant reach to
Its maximum duration tmax, n of assigning, then meet residue (all) stages of this condition can use with
Lower formula, with the first parameter para1, n and the second parameter para2, being incremented by time of weighted sum Kn of n
Sequence is chosen and sorts out:
Kn=β1.para1,n+β2.para2,n
Wherein β1[BETA_1] and β2[BETA_2] is to be respectively used to weight described first parameter
Para1, n and the second parameter para2, the coefficient of n.
On the contrary, if neither one meets this condition in Remaining Stages, then all Remaining Stages use with
Lower formula, according to not only the first parameter para1, n and the second parameter para2, the value of n and the 3rd
Parameter para3, weighted sum K of the value of n ' increasing order of n is chosen and sorts out:
K'n=β1.para1,n+β2.para2,n+β3.para3,n
Wherein β3[BETA_3] is described 3rd parameter para3, the weight coefficient of n.
In the 3rd function F3, electronic control unit 3 is according to for setting up in the second function F2
The operation in primary importance (that is, representing for weighted sum Kn or the minimum of K ' n) in nearly classification
The data of storage in the form of stage PFn, generate for launching to rocket engine 1 and/or to testboard
The set point of 2 and monitor threshold value accordingly.Hereafter, in the 4th function F4, these set points
Applied by electronic control unit 3 to control rocket engine 1 and/or the operation of testboard 2.
With the 4th function F4 simultaneously, electronic control unit 3 execution obtains and processes and the current operation stage
Five-function F5 of physical parameter X that PFn is associated, especially by sensor 14 to 17.These
The value of physical parameter can depend on parameter and depend on wanting analyzed its frequency range with high-frequency
Or be sampled with low frequency.Such as, for less than in the range of 25 hertz (Hz) analyze signal,
May be with approximation 100 points (pt/s) application low-frequency samplings per second, and for needs may be substantially
Higher than in the range of 25 hertz (Hz) and may be even up under 5000Hz analyze signal, may
Sample with the high frequency applications of about 25000pt/s.
In five-function F5, according to especially for processing corresponding to one or more physical parameters X
The sensor of each signal and/or the computed reliability of algorithm, confidence level CLX in scope 0 to 1
Can join with each signal correction.The value of each of these confidence levels CLX can be predetermined,
Or it can be according to the noise level in the signal corresponding with the physical parameter being associated and/or skew
Level and/or the difference according to this signal and predetermined threshold calculate in real time.Therefore, by example, can
Described confidence level can be distributed to each signal sampled with low frequency according to the noise level in signal
CLX, wherein noise is measured by the distribution σ [SIGMA] of this signal in traveling time window, Yi Jigen
According to the asymmetric coefficient of uncertainty γ of this signal in traveling time window1[GAMMA_1] adopts to high-frequency
Each signal of sample distributes described confidence level CLX.
The distribution σ [SIGMA] of signal and confidence level CLX distributed to this signal can meet example
Relation as shown in Figure 3A.In this example, if the distribution σ [SIGMA] of signal is excessive, the highest put
The flat CLX of menstruation is not allocated to this signal, if or on the contrary, it is too small, represent that signal is excessive
Constant (dead letter number).
The asymmetric coefficient of uncertainty γ of signal1[GAMMA_1] and the confidence water distributed to this signal
Flat CLX can meet the function shown in such as Fig. 3 B for its part.In this example, if signal
Asymmetric coefficient of uncertainty γ1The absolute value of [GAMMA_1] is too high, the highest confidence level CLX not by
Distribute to this signal.
It is likely to confidence level CLsetIt is associated with one group of physical parameter X, this confidence level CLset
By electronic control unit 3 according to confidence level CLX not being associated with physical parameter X of this group
Value calculates.This calculating can be especially through to the confidence not being associated with physical parameter X of this group
The value fuzzy logic operator of horizontal CLX performs.In spendable operator, have especially
Probabilistic operation accords with, and particularly the t-mould of probability and t-assist modulus operator.The former is corresponding to the two of computing
The product of item, and the latter is corresponding to the product deducting two of computing from two sums of computing.
Therefore, by example, by application t-modulus operator, and facilitate single stage ending standard
Confidence level CL of three signals that physical parameter A, B with C are the most correspondingA,CLBAnd CLCBy phase
Be multiplied together, with obtain be associated with this group physical parameter and therefore with corresponding stage ending standard phase
Confidence level CL of associationset。
Finally, in the 6th function F6, electronic control unit 3 is confirmed whether to meet at least one stage
Whether ending standard and at least one confidence level being associated with this standard minimize threshold value.As
Fruit meets this at least one standard and confidence level has minimized threshold value, possibly for the most a certain
Little time span, the current generation can terminate, and electronic control unit 3 can be back to the second function
F2, wherein form is rearranged after eliminating the stage terminated, and hereafter the 3rd function F3 generation is right
Should be in the operational set-points of next stage.The end current generation can also depend on that the minimum in this stage is held
Renew, so that the operational phase will not too fast terminate.
On the contrary, if if being unsatisfactory for this at least one stage ending standard and/or be associated with this standard
At least one confidence level be not up to its minimum threshold, then this stage can continue until and reach predetermined
The maximum duration.
Although describing the present invention with reference to specific implementation, it is apparent that these implementations can be made
Go out various modifications and variations, and the general environment of the present invention limited without departing from claims.This
Outward, the Individual features of above-mentioned various implementation can combine in Additional implementations.Therefore, say
Bright book and accompanying drawing should be to consider in illustrative and not restrictive meaning.
Claims (17)
1. for testing the technical testing method of equipment, described method include with for this equipment and/
Or it is corresponding at least for testing the stationary value of at least one operational set-points of the testboard of this equipment
One operational phase, wherein, if met and the one group of physics ginseng obtained during the described operational phase
If the standard that number is associated and the confidence level being associated with described one group of physical parameter are at least up to
One predetermined threshold, the end before maximum duration threshold value of the most described operational phase.
2. technical testing method as claimed in claim 1, it is characterised in that if meeting described standard
It is and if described confidence level is at least up to described predetermined threshold up to few predetermined minimum duration, then described
Operational phase terminated before maximum duration threshold value.
3. the technical testing method as described in claim 1 or claim 2, it is characterised in that described
One group of physical parameter includes multiple physical parameter, and each physical parameter confidence level corresponding with is correlated with
Connection, the confidence level being associated with described one group of physical parameter entirety is to be associated with the plurality of physical parameter
The function of confidence level.
4. technical testing method as claimed in claim 3, it is characterised in that described function include by with
The product that the confidence level that two physical parameters in the plurality of physical parameter are associated is multiplied together.
5. the technical testing method as described in claim 3 or claim 4, it is characterised in that described
Function include from two confidence levels being associated with two physical parameters the plurality of physical parameter it
The product identical the two confidence level being multiplied together is deducted in.
6. the technical testing method as described in any one of claim 3 to 5, it is characterised in that described
At least one in confidence level is predetermined.
7. the technical testing method as described in any one of claim 3 to 6, it is characterised in that with thing
At least one confidence level that reason parameter is associated is according in the signal corresponding to the physical parameter being associated
Noise level calculates.
8. the technical testing method as described in any one of claim 3 to 7, it is characterised in that with thing
At least one confidence level that reason parameter is associated is according in the signal corresponding to the physical parameter being associated
Asymmetric coefficient of uncertainty calculates.
9. the technical testing method as described in any one of claim 3 to 8, it is characterised in that with thing
Reason at least one confidence level of being associated of parameter is according between the value of the physical parameter being associated and predetermined threshold
Difference calculate.
10. the technical testing method as described in any one of claim 3 to 9, it is characterised in that described
The each of confidence level has the value in the scope of dropping down onto 0 to 1.
11. technical testing methods as claimed in any preceding claim, it is characterised in that include multiple difference
The sequence of operational phase, each operational phase is corresponding to being test for equipment and/or the test for this equipment
The stationary value of at least one operational set-points of platform.
12. technical testing methods as claimed in claim 11, it is characterised in that operate in described sequence
The order in stage is according at least one priority assigned to each operational phase and according to corresponding to described
The value of at least one operational set-points of multiple operational phases is set up.
13. technical testing methods as claimed in any preceding claim, it is characterised in that described equipment is
Engine.
14. technical testing methods as claimed in claim 13, it is characterised in that described engine is liquid
Booster rocket engine (1).
15. technical testing methods as claimed in claim 14, it is characterised in that described liquid advances fire
Arrow engine (1) includes turbine pumping system.
16. 1 kinds of electronic control units (3) with the output of at least one data, the output of described data is used
In at least one operational set-points being launched to equipment and/or being used for testing the testboard (2) of described equipment,
Described unit is configured to when application is according to the method for any one of claim 1 to 15 control this equipment
Technical testing.
17. 1 kinds of data mediums comprising one group of instruction, described instruction can be performed to perform by computer system
According to the technical testing method described in any one of claim 1 to 15.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1360839A FR3012882B1 (en) | 2013-11-05 | 2013-11-05 | TECHNICAL TEST METHOD |
| FR1360839 | 2013-11-05 | ||
| PCT/FR2014/052767 WO2015067878A1 (en) | 2013-11-05 | 2014-10-30 | Technical testing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105899929A true CN105899929A (en) | 2016-08-24 |
| CN105899929B CN105899929B (en) | 2019-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480072203.XA Active CN105899929B (en) | 2013-11-05 | 2014-10-30 | Technical testing method |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US10352275B2 (en) |
| EP (1) | EP3066445A1 (en) |
| JP (1) | JP6466463B2 (en) |
| KR (1) | KR102266436B1 (en) |
| CN (1) | CN105899929B (en) |
| FR (1) | FR3012882B1 (en) |
| WO (1) | WO2015067878A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087155B (en) * | 2017-12-19 | 2024-02-09 | 西安航天动力研究所 | Test method of frequency characteristic test system of high-flow liquid conveying system |
| CN111060761B (en) * | 2019-12-12 | 2021-11-16 | 西安航天动力试验技术研究所 | Test method based on liquid rocket engine test system |
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2013
- 2013-11-05 FR FR1360839A patent/FR3012882B1/en active Active
-
2014
- 2014-10-30 WO PCT/FR2014/052767 patent/WO2015067878A1/en active Application Filing
- 2014-10-30 CN CN201480072203.XA patent/CN105899929B/en active Active
- 2014-10-30 EP EP14805997.5A patent/EP3066445A1/en active Pending
- 2014-10-30 US US15/034,709 patent/US10352275B2/en active Active
- 2014-10-30 JP JP2016551060A patent/JP6466463B2/en active Active
- 2014-10-30 KR KR1020167015091A patent/KR102266436B1/en active IP Right Grant
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2017500588A (en) | 2017-01-05 |
| KR102266436B1 (en) | 2021-06-17 |
| US10352275B2 (en) | 2019-07-16 |
| US20160273490A1 (en) | 2016-09-22 |
| WO2015067878A1 (en) | 2015-05-14 |
| JP6466463B2 (en) | 2019-02-06 |
| FR3012882B1 (en) | 2015-11-27 |
| KR20160081979A (en) | 2016-07-08 |
| EP3066445A1 (en) | 2016-09-14 |
| CN105899929B (en) | 2019-08-27 |
| FR3012882A1 (en) | 2015-05-08 |
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